The invention discloses a power transmission tower vibration displacement real-time monitoring system, including a sensing unit, a signal conditioning and isolation unit, a signal acquisition unit, a power supply unit, a communication unit and a displacement conversion unit. The sensing unit is an acceleration sensor, the acceleration sensor is connected with the signal conditioning and isolation unit, the signal conditioning and isolation unit is connected with the signal acquisition platform, the signal acquisition platform is connected with a measurement and control unit through the communication unit, the measurement and control unit is connected with the displacement conversion unit, and the power supply unit supplies power to the signal acquisition platform. The power transmission tower vibration displacement real-time monitoring system provided by the invention can monitor the vibration displacement of a tower material in real time, under the condition of power transmission conductor galloping, real-time monitoring of tower displacement by electric power workers is facilitated, the safe state of the tower is judged accordingly, and once the tower has a trend of danger, remedy measures can be taken in time.